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How the forex, gold and index markets work

Beginner⏱ 8 min readUpdated 31 Oct 2026
In this lesson you'll learn
  • How currency pairs are quoted, and what moves them
  • Why gold and indices behave differently from currencies
  • The trading sessions, and when markets are busiest

Forex: trading one currency against another

Currencies trade in pairs. In EURUSD at 1.1650, one euro (the base currency) costs 1.1650 US dollars (the quote currency). Buying EURUSD means buying euros and selling dollars. Forex is the world's largest market, trading trillions of dollars a day, mostly between banks.

  • Majors: pairs with the US dollar and another big currency (EURUSD, GBPUSD, USDJPY, AUDUSD, USDCAD, USDCHF, NZDUSD). Tightest spreads.
  • Crosses: pairs without the dollar (EURGBP, GBPJPY).
  • Exotics: a major against a smaller currency (USDZAR, USDTRY). Wider spreads, bigger jumps.

Currencies are moved mainly by interest rates, inflation, growth data and risk mood. A central bank raising rates usually supports its currency.

Gold (XAUUSD)

Gold is priced in dollars per ounce. It often rises when real interest rates fall, when the dollar weakens, or when investors look for safety. It moves much more in dollars per day than most currency pairs, so lot sizes must be smaller for the same risk.

Stock indices

An index tracks a basket of company shares: US30 (Dow Jones), NAS100 (Nasdaq 100), US500 (S&P 500), GER40 (DAX). Indices react to company earnings, interest rates and the economy, and they move fastest around the stock market open.

The trading day: three sessions

SessionRoughly (London time)Character
Asia (Tokyo, Sydney)00:00–08:00Quieter, ranges common; yen and Aussie pairs move
London08:00–16:30The busiest session; big moves and breakouts
New York13:30–22:00US data and the US stock open; overlap with London is the most active time

Forex trades from Sunday evening to Friday evening. Indices and gold follow their own hours set by your broker, with a short daily break.

Common mistakes
  • Trading exotic pairs as a beginner and paying wide spreads.
  • Using the same lot size on gold as on EURUSD.
  • Trading the quiet Asian hours with a breakout strategy built for London.

Check yourself

1. In GBPUSD, which is the base currency?
2. Which session overlap is usually the most active?
3. What usually supports a currency?

Key takeaways
  • A pair quotes how much of the second currency buys one unit of the first.
  • Gold and indices move more per day: size them down.
  • London and the London–New York overlap are where most moves happen.
Education, not advice. Goldman Academy teaches how markets and tools work. Nothing here is a recommendation to buy or sell, and no lesson promises profits. Trading leveraged products carries a high risk of losing money; only trade money you can afford to lose. · Written by Goldman Academy, reviewed by Faisal